svn commit: r312282 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Jan 16 11:04:36 2017
New Revision: 312282
URL: https://svnweb.freebsd.org/changeset/base/312282

Log:
  Added a new test.
  
  Sponsored by:	Dell EMC Isilon

Added:
  user/pho/stress2/misc/posix_openpt2.sh   (contents, props changed)

Added: user/pho/stress2/misc/posix_openpt2.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/posix_openpt2.sh	Mon Jan 16 11:04:36 2017	(r312282)
@@ -0,0 +1,154 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2016 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# "panic: Assertion !tty_gone(tp) failed at ttydevsw.h:153" seen.
+# https://people.freebsd.org/~pho/stress/log/posix_openpt2.txt
+# Fixed by r312077
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > posix_openpt2.c
+mycc -o posix_openpt2 -Wall -Wextra -O2 posix_openpt2.c -lutil || exit 1
+rm -f posix_openpt2.c
+
+/tmp/posix_openpt2 &
+
+while kill -0 $! 2>/dev/null; do
+	$here/../testcases/swap/swap -t 2m -i 20
+done
+wait
+
+rm -f /tmp/posix_openpt2
+exit 0
+EOF
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <libutil.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
+
+#define LOOPS 10
+#define PARALLEL 2
+#define RUNTIME 300
+
+void
+churn(char *path)
+{
+	FTS *fts;
+	FTSENT *p;
+	time_t start;
+	int fd, ftsoptions;
+	char *args[2];
+
+	ftsoptions = FTS_PHYSICAL;
+	args[0] = path;
+	args[1] = 0;
+
+	setproctitle("churn");
+	start = time(NULL);
+	while (time(NULL) - start < RUNTIME / LOOPS) {
+		if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
+			err(1, "fts_open");
+
+		while ((p = fts_read(fts)) != NULL) {
+			if (p->fts_info == FTS_D ||
+			   p->fts_info == FTS_DP)
+				continue;
+			if ((fd = open(p->fts_path, O_RDONLY)) > 0)
+				close(fd);
+
+		}
+
+		if (errno != 0 && errno != ENOENT)
+			err(1, "fts_read");
+		if (fts_close(fts) == -1)
+			err(1, "fts_close()");
+	}
+
+	_exit(0);
+}
+
+void
+pty(void)
+{
+	time_t start;
+        int masterfd, slavefd;
+	char *slave;
+
+	start = time(NULL);
+	while (time(NULL) - start < RUNTIME / LOOPS) {
+		if ((masterfd = posix_openpt(O_RDWR | O_NOCTTY)) == -1)
+			err(1, "posix_openpt");
+		if ((slave = ptsname (masterfd)) == NULL)
+			err(1, "ptsname");
+		if ((slavefd = open(slave, O_RDWR|O_NOCTTY)) == -1)
+			err(1, "open(%s)", slave);
+		usleep(arc4random() % 10000);
+		close(slavefd);
+		close(masterfd);
+	}
+	_exit(0);
+}
+
+int
+main(void)
+{
+	int i, j;
+
+	for (j = 0; j < LOOPS; j++) {
+		for (i = 0; i < PARALLEL; i++) {
+			if (fork() == 0)
+				pty();
+		}
+		for (i = 0; i < PARALLEL; i++) {
+			if (fork() == 0)
+				churn("/dev/pts");
+		}
+		for (i = 0; i < 2 * PARALLEL; i++)
+			wait(NULL);
+	}
+
+	return (0);
+}